write some lines about
1) Heinrich rudolph hetrz
2) Archimedes
3) James prescott
Answers
Answer
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1) Heinrich Rudolph Hetrz
=> Heinrich Rudolph Hertz was born on 22 February 1857 in Hamburg , Germany and educated at the University Berlin. He confirmed J.C.Maxwell electromagnetic theory by his experiment . he laid the foundation for the future development of radio , telephone , Telegraph and event television . he also discovered the photo electronic effect which was later explained by Albert Einstein. the SI unit of frequency was named as hetrz in his honour .
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2) Archimedes
=> Archimedes was a Greek scientist. he discovered the principal subsequently named after him after noticing that the water in a bathtub overflowed when he stepped into it. Shri Ram through the streets shouting "Eureka" . which means I have got it this knowledge helped him to determine the purity of gold in the crown made for the king .
his work in the field of geometric and mechanism made him famous. his understanding of levers , pulleys , wheel's and axle left the Greek army in its war with Roman Army .
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3) James Prescott
=> James prescott Joule was an outstanding British physicist . he is best known for his research and thermodynamics amongst other things he formulated in law for the heating effect of electric current . he also verified experimentally the law of conservation of energy and discovered the value of mechanical equivalent of heat. the unit of energy and work called Joule was named after him .
Answer:
write some lines about
- 1) Heinrich rudolph hetrz
Heinrich Rudolf Hertz was a German physicist who first conclusively proved the existence of the electromagnetic waves predicted by James Clerk Maxwell's equations of electromagnetism. The unit of frequency, cycle per second, was named the "hertz" in his honor.
- 2) Archimedes
Archimedes was born about 287 BCE in Syracuse on the island of Sicily. He died in that same city when the Romans captured it following a siege that ended in either 212 or 211 BCE. One story told about Archimedes' death is that he was killed by a Roman soldier after he refused to leave his mathematical work.
- 3) James prescott
James Prescott Joule, (born December 24, 1818, Salford, Lancashire [now in Greater Manchester], England—died October 11, 1889, Sale, Cheshire), English physicist who established that the various forms of energy—mechanical, electrical, and heat—are basically the same and can be changed one into another. Thus, he formed the basis of the law of conservation of energy, the first law of thermodynamics.